Update - 50 Days without smoking
I am feeling great, this community helped me in quitting. After 50 days I feel my energy levels are doubled, earlier I used to get very high heart beat in treadmill, now it's not that much and I don't get tired easily too.
My cravings are gone too, now when my friends smoke, I don't feel like it. In fact, the smell of smoke is feeling bad to me now, just realizing how bad I would have smelled too after smoking.
Finally, it's a journey and still a long way to go. But, anyone trying to quit, just go for it, after initial few weeks of struggle, it's just going better and better.